Small tweaks in admin table dropdowns.

misago/static/misago/admin/css/misago/tables.less

@@ -186,6 +186,14 @@
             }
           }
         }
+
+        .dropdown-menu {
+          top: 24px;
+
+          &:after {
+            right: 9px;
+          }
+        }
       }
     }
   }

misago/static/misago/admin/css/style.css

@@ -6295,6 +6295,12 @@ body {
 .table-panel table.table tr td.row-action .dropdown-toggle:active.btn-success {
   color: #1b7943;
 }
+.table-panel table.table tr td.row-action .dropdown-menu {
+  top: 24px;
+}
+.table-panel table.table tr td.row-action .dropdown-menu:after {
+  right: 9px;
+}
 .table-panel table.table tr.active td {
   background-color: rgba(240, 173, 78, 0.05);
 }